import cn.nukkit.scheduler.FileWriteTask; //导入依赖的package包/类
public void saveOfflinePlayerData(String name, CompoundTag tag, boolean async) {
    if (this.shouldSavePlayerData()) {
        try {
            if (async) {
                this.getScheduler().scheduleAsyncTask(new FileWriteTask(this.getDataPath() + "players/" + name.toLowerCase() + ".dat", NBTIO.writeGZIPCompressed(tag, ByteOrder.BIG_ENDIAN)));
            } else {
                Utils.writeFile(this.getDataPath() + "players/" + name.toLowerCase() + ".dat", new ByteArrayInputStream(NBTIO.writeGZIPCompressed(tag, ByteOrder.BIG_ENDIAN)));
            }
        } catch (Exception e) {
            this.logger.critical(this.getLanguage().translateString("nukkit.data.saveError", new String[]{name, e.getMessage()}));
            if (Nukkit.DEBUG > 1) {
                this.logger.logException(e);
            }
        }
    }
}
 

import cn.nukkit.scheduler.FileWriteTask; //导入依赖的package包/类
public void saveOfflinePlayerData(String name, CompoundTag tag, boolean async) {
    if (this.shouldSavePlayerData()) {
        try {
            if (async) {
                this.getScheduler().scheduleAsyncTask(new FileWriteTask(FastAppender.get(this.getDataPath() + "players/", name.toLowerCase(), ".dat"), NBTIO.writeGZIPCompressed(tag, ByteOrder.BIG_ENDIAN)));
            } else {
                Utils.writeFile(FastAppender.get(this.getDataPath(), "players/", name.toLowerCase(), ".dat"), new ByteArrayInputStream(NBTIO.writeGZIPCompressed(tag, ByteOrder.BIG_ENDIAN)));
            }
        } catch (Exception e) {
            this.logger.critical(this.getLanguage().translateString("nukkit.data.saveError", new String[]{name, e.getMessage()}));
            if (Nukkit.DEBUG > 1) {
                this.logger.logException(e);
            }
        }
    }
}
 

import cn.nukkit.scheduler.FileWriteTask; //导入依赖的package包/类
public boolean save(Boolean async) {
    if (this.file == null) throw new IllegalStateException("Failed to save Config. File object is undefined.");
    if (this.correct) {
        String content = "";
        switch (this.type) {
            case Config.PROPERTIES:
                content = this.writeProperties();
                break;
            case Config.JSON:
                content = new GsonBuilder().setPrettyPrinting().create().toJson(this.config);
                break;
            case Config.YAML:
                DumperOptions dumperOptions = new DumperOptions();
                dumperOptions.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
                Yaml yaml = new Yaml(dumperOptions);
                content = yaml.dump(this.config);
                break;
            case Config.ENUM:
                for (Object o : this.config.entrySet()) {
                    Map.Entry entry = (Map.Entry) o;
                    content += String.valueOf(entry.getKey()) + "\r\n";
                }
                break;
        }
        if (async) {
            Server.getInstance().getScheduler().scheduleAsyncTask(new FileWriteTask(this.file, content));

        } else {
            try {
                Utils.writeFile(this.file, content);
            } catch (IOException e) {
                Server.getInstance().getLogger().logException(e);
            }
        }
        return true;
    } else {
        return false;
    }
}